Internal-combustion engine.



C. W. GREEN. INTERNAL COMBUSTION ENGINE.

v APPLICATION FILED FEB. 9. 1916.

lfl fi flfifim Patented Feb. 18, 1919.

@N mmefi 1 V CHARLES WILLIAM GREEN, 0F PEORIA, ILLINOIS.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Feb.18,1919.

Application filed February 9, 1916. Serial No. 77,122.

To all whom it may concern Be it known that I, CHARLES WILLIAM GREEN, acitizen of the United States, and a resident of Peoria, in the. countyof Peoria and State of Illinois, have invented certain new and usefulImprovements in Internal-Combustion Engines, of which the following isafull, clear, and'exact description, reference being had to theaccompanying drawing, forming part of this specification.

My invention relates to internal combustion engines of the silent typewherein the puppet valves of the ordinary engine are replaced by flatslide valves, and wherein should the slide valves become worn and permita leakage from the combustion chamber, suitable means are providedwhereby the valves may be properly readjusted.

The object of. my invention is to provid a simple and compact valvemechanism and also a simple and efiicient adjusting means for thevalves.

A further object is to so arrange the cylinders and associated-partsthat the same may be easily machined and readily ads justed shouldoccasion require.

Further objects of myinvention Wlll ap pear herein and be described asthe specification proceeds.

The novelty of my invention will be hereinafter more fully set forth andspecifically pointed out in the claims.

In the accompanying drawing,

Figure 1 is a sectional elevation through a cylinder showing theordinary parts of an internal combustion engine. and also showing myvalves, their operating connections, and the means for adjustment.

Fig. 2 is a side elevation partly in section of the upper part of Fig.1.

Fig. 3 is a sectlonal plan view of Fig. 1 taken through the ports.'

The same numerals of reference are used to indicate identical parts inall the figures.

I am aware that there are a number of patentsnow in force and coveringvarious forms of slide valves as applied to internal combustion en ines,and I therefore disclaim the broa idea of a slide valve.

My present invention is as applicable to multi-c-ylinder engines as itis to single cylinder, and I will confine myself to a deser1ption of asingle cylinder, it being understood that a multi-cylinder engine onlyrequires a duplication of the parts described for each cylinder, andwhere my invention 1 is applied to a multi-oylinder engine, such enginemay have 'its cylinders arranged se arately or en, bloc.

eferrin' to the drawings, 1 represents any suitab e crank case within,which is journaled the crank shaft 2 after the usual or suitable form ofconstruction. The

lower end of the connecting rod 3 is connected to the piston 4, whichlatter reciprocates in the cylinder 5, which is suitably attached to thecrank case 1.

The cylinder 5 is providednear its up er end with inlet and exhaustports 6 and and these ports extend from the combustion chamber andterminate at the valve seats 8. The valve seats 8 are flat surfacesarranged vertically on opposite sides of the cylinder as will be readilyseen by reference to Figs. 1 and 3.

Attached to the surfaces 8, as by means of cap-screws 9, (Fig.2), andone on each of said surfaces, are valve housings 10 between theinnerfaces of which and the valve surfaces 8 are confined the valves 11.There are two'of such valves on. each side of the cylinder, and each ofthe valves is provided with a port 12 located near its upper end and abifurcated enlargement at its lower end to receive the upper end of aconnecting rod 13 by means of which the valve is operated. Theconnecting rods 13 are attached, at their lower ends to a suitableeccentric shaft 14 which is journaled in the crank case and driven athalf the speed of the crank shaft and from the crank shaft by means ofthe usual or any suitable driving connection which, forming no part ofmy present invention and being common to all forms of internalcombustion engines, is not shown.

It is to be understood that there are two eccentric shafts andthat eachshaft has two eccentrics thereon and opposite the bifurcated ends of thevalves, in such position that when the connecting rods are connected toboth the eccentric andthe valve and the shaft rotated, an up and downmotion will be imparted to the valves to open and close the ports topermit ingress of the combustible charge on the inlet side of the engineand egress of the burned. gases at the exhaust vice which consists of awedge 15, vertically adjustable as by means of the screws 16. The wedge15, when properly adjusted, serves to maintain the-valves in properworking relation to the surfaces 8. I

Should the valves become worn from con 'stant service and not properlyfill the space between the wedge and the valve surface it is onlynecessary to remove the hand-hole cover 17 whereupon the lower ends ofthe valves and their operating mechanism are exposed and then by meansof the adjusting screws, elevate the wedge or compensating device to aposition wherethe valves 15' referred to may if desired be made integralwith the valve housing, which latter may be continuous over all thecylinders.

It is to be observed that the machine work on the cylinder itself wherethe valve surfaces are is exceedingly simple, and consists in eithergrinding or milling the perfectly'flat surface on each side of thecylinderagainst which the flat surface of the valves operates andagainst which the valve housings are suitably bolted as before referredto; Similarly the valves themselves are constructed of thin plates whichare very easily machined to the necessary accuracy,

and in fact all of the valve arts are produced bysimple straight sur acework.

Inassembling, it is not necessary to resort to the extreme accuracyrequired for other forms of engines for the reason that the compensatingdevice will accommodate variations in the machine work as well as adjustthe valves after they have become Worn, it being borne in mind that thegreat difiiculty surrounding the operation of internal combustion motorsis to prevent leakage atthe valves. Havin thus fully described myinvention, I c aim,

1. In an internal combustion engine, the combination of a cylinder,ports, a pair of sliding valves operating over said ports, a housingover said valves, a wedge between said housing and said valves wherebythe latter may be adjusted, means for adjusting said wedge to compensatethe wear of said valves, means for locking said adjustment, and a coverover said locking means whereby when, said cover is in place theadjustment of said wedge can not bechanged.

2. In an internal combustion engine, the.

combination of a cylinder, an inlet port, an exhaust port opposite saidinlet port, a pair of sliding valves operating over each 6 said ports, ahousing over each of said pair of valves, a wedge between each housingand its pair of valves, means for adjusting said wedges to compensatefor wear of said Valves, means for locking said wedges in their adjustedpositions, and covers over said looking means whereby when said coversare attached said wedges can not be moved.

. 1 CHARLES WILLIAM GREEN.

